- Companies
- Plumbers and heating engineers
- London
- Assist Install Maintain Plumbing Heating/Drainage Ltd
Assist Install Maintain Plumbing Heating/Drainage Ltd
- Company number
- 16974254
- Incorporated
- 20 Jan 2026
- Registered office
- 81 Tottenham Road, London, N1 4DD
- Nature of business
- Plumbing, heat and air-conditioning installation
Assist Install Maintain Plumbing Heating/Drainage Ltd is a newly incorporated private limited company registered in London, company number 16974254, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 20 October 2027, and its first CT600 is due at HMRC on 19 January 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Assist Install Maintain Plumbing Heating/Drainage Ltd is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 4DD on a map.
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What happens if Assist Install Maintain Plumbing Heating/Drainage Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 20 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Oct 2027 to 20 Nov 2027 | £150 |
| 1 to 3 months late | 21 Nov 2027 to 20 Jan 2028 | £375 |
| 3 to 6 months late | 21 Jan 2028 to 20 Apr 2028 | £750 |
| More than 6 months late | From 21 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16974254
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 January 2026
- Registered office
- 81 Tottenham Road, London, N1 4DD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in London
Other active plumbing and heating companies registered in London.
- Associated Cooling Services Limited1991
- Astbury-Wright Energy Ltd2026
- Astra Altair Ltd2024
- Astreon Trade Limited2026
- At Buildings Contractor Limited2015
- At Plumbers Ltd2020
- Atkinson Compliance Ltd2025
- Atlantis Heating Services Ltd2020
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Assist Install Maintain Plumbing Heating/Drainage Ltd's accounts due?
Assist Install Maintain Plumbing Heating/Drainage Ltd's next accounts are due at Companies House by 20 October 2027 (in 371 days), covering the period to 31 January 2027.
When is Assist Install Maintain Plumbing Heating/Drainage Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 19 January 2027, due by 19 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Assist Install Maintain Plumbing Heating/Drainage Ltd still trading?
Assist Install Maintain Plumbing Heating/Drainage Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Assist Install Maintain Plumbing Heating/Drainage Ltd do?
Assist Install Maintain Plumbing Heating/Drainage Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Assist Install Maintain Plumbing Heating/Drainage Ltd?
Assist Install Maintain Plumbing Heating/Drainage Ltd was incorporated on 20 January 2026, less than a year ago.
What is the penalty if Assist Install Maintain Plumbing Heating/Drainage Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Assist Install Maintain Plumbing Heating/Drainage Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.